I am wondering if it was not mechanical failure could it have been a gyro related issue, I should say now I have never flown the 365, but I have experienced and am familiar with gryo related problems in the SK, which can be quite insidious initially and then deteriorate quickly.
Such a problem can affect both the attitude information supplied to the crew and obviously the stabilisation system. A problem of that nature relatively close to the surface at night with poor to nil visual cues/horizon would be a nightmare to deal with.
